High density ammonium nitrate particles, e.g. prills are treated to reduce the density thereof by contact with a liquid medium which penetrates into the particles via pre-existing pathways, dissolves ammonium nitrate at the surfaces of the pathways and produces a gassing reaction by virtue of the presence of a chemical gassing agent or by a reaction with the ammonium nitrate whereby a portion of the ammonium nitrate particle is depleted by dissolution or gas losses during reaction, the gassing action facilitating venting of liquid from the particles and drying thereof to yield a particle of higher porosity.
高密度
硝酸铵颗粒,例如通过与液体介质接触来降低其密度,液体介质通过预先存在的通路渗入颗粒,在通路表面溶解
硝酸铵,并通过
化学发气剂的存在或与
硝酸铵的反应产生发气反应,部分
硝酸铵颗粒在反应过程中因溶解或气体损失而耗尽,发气作用促进液体从颗粒中排出并使其干燥,从而产生孔隙率更高的颗粒。